I have used KeePassXC for years. I also use Syncthing which syncs files via my wifi for all devices, including KeePass.

If you want gaming, check out POP OS (ubuntu/debian,) Garuda Linux KDE Gaming Edition (Arch) or CachyOS (Arch.)

Torrentfreak

I assume you are using F-droid app manager, and also added IzzyonDroid repo to it? There you can get a lot of apps, like firewalls to block apps that call home when you don’t really use them. Replace most of your apps with open source alternatives from F-droid. Get an email hosting alternative that isn’t one of the big (spy, data mining) companies. Use decentralized privacy focused social media options. What type of phone manufacturer do you use and is it unlocked? You could use an android privacy rom like CalyxOS, that is what I use, completely de-googled, uses MicroG instead of Google Play services. A VPN would be my last option to add, especially when connecting to outside wifi.